Re: [PATCH] drm/tegra: dpaux: Fix error handling

[Jon Hunter]

On 28/10/16 10:09, Christophe JAILLET wrote:
> 'devm_pinctrl_register()' returns an error pointer or a valid handle. So
> checking for NULL here is pointless and can never trigger.
>
> Check the returned value with IS_ERR instead and propagate this value as
> done in the other functions which call 'devm_pinctrl_register()'
>
> Fixes: 0751bb5c44fe ("drm/tegra: dpaux: Add pinctrl support")
>
> Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
> ---
>  drivers/gpu/drm/tegra/dpaux.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c
> index 059f409556d5..2fde44c3a1b3 100644
> --- a/drivers/gpu/drm/tegra/dpaux.c
> +++ b/drivers/gpu/drm/tegra/dpaux.c
> @@ -539,9 +539,9 @@ static int tegra_dpaux_probe(struct platform_device *pdev)
>  	dpaux->desc.owner = THIS_MODULE;
>
>  	dpaux->pinctrl = devm_pinctrl_register(&pdev->dev, &dpaux->desc, dpaux);
> -	if (!dpaux->pinctrl) {
> +	if (IS_ERR(dpaux->pinctrl)) {
>  		dev_err(&pdev->dev, "failed to register pincontrol\n");
> -		return -ENODEV;
> +		return PTR_ERR(dpaux->pinctrl);
>  	}
>  #endif
>  	/* enable and clear all interrupts */

Thanks for the fix!

Acked-by: Jon Hunter <jonathanh@xxxxxxxxxx>

Cheers
Jon

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